Twinstar II FPV

A friend of from www.fullkontroll.se asked me to build a complete FPV setup for him. I got to choose what gear and he would get for me. That sounded good to my ears, so I agreed. Here is the shopping list:

The transmitter done with the input cables braided to reduce interference.

Since the FPV setup is going to be powered by the same LiPo as the RC setup, I needed to make a filter. It’s a very simple filter using nothing more than a couple of capacitors and a coil.

This is the schematic for the filter. In my case I used a 1mH for the coil, 220uF for C1 and C2, 100nF for C3 and C6 and 10uF for C4 ad C5. The capacitors C3-C6 are 1206 SMD size and are soldered directly C1 and C2 as you can see in the pictures.

Here is a comparison shot between the AnyVolt micro and the old DIY filter I made a while back.

Soldered everything up.

Added some hotglue.

Shrink wrapped.

And squeezed everything into the box on top.

It turned out pretty darn nice, in my opinion.

Time to start building the airframe. Since I’ve already made a build log on a Twin Star II, I decided to only take pictures of “interesting” parts of this build.

I placed the servos in the back instead of in the front to get them out of the way and get the CG a bit further back.

I used heat-shrink to around the servos and then glued them in place.

I also extended the battery compartment a tiny bit.

The fuselage glued together.

I made a pair of custom motor mounts out of 1.2mm thick DIY PCB lamination.

I extended the aileron servos with 60cm servo cables.

I extended the motor output cables on the ESC’s and re-shrink wrapped them.

Instead of placing the ESC’s in the motor pods, I decided to place them nearer the inside of the wing.

Before glueing.

After glueing.

A close up of the current sensor and ESC in place.

All cables and connectors in place on the wing.

Started work on the ground station. The patch-antenna will be placed on the the lid of the case.

The receiver in place together with the cables.

I used a deans ultra connector between the wings to power the second ESC and multiplex connectors for the signal wires. If you look closely you can also see that I added a piece of foam as a stop for the battery. This way you get the right CG fast and easy every time.